Finding the Third Proportional to 84,215.25 and 123,036.75

Step by Step Solution

1. Step 1: Write the proportion equation
   84,215.25 : 123,036.75 = 123,036.75 : x
2. Step 2: Convert to fraction form
   84,215.25/123,036.75 = 123,036.75/x
3. Step 3: Cross multiply
   84,215.25x = 123,036.75 × 123,036.75
4. Step 4: Simplify right side
   84,215.25x = 15,138,041,850.56
5. Step 5: Solve for x
   x = 15,138,041,850.56/84,215.25
6. Step 6: Final answer
   x = 179,754.16